582 entries under adjective topic. ×

11
imperceptible(weak, pale, subtle, hidden)
11
intricate(hard, difficult, heavy, complex)
11
perplexing(hard, rough, difficult, dark)
11
secluded(dark, near, distant, remote)
11
undefined(rough, uncertain, doubtful, dim)
11
unfamiliar(strange, new, different, unknown)
11
unimportant(mean, simple, lower, poor)
11
unnoticeable(quiet, see, plain, hidden)
10
covered(remote, secret, unknown, hidden)
10
difficult(hard, strange, uncertain, complex)
10
dismal(dark, sadness, gloom, unclear)
10
dubious(rough, uncertain, unreasonable, doubtful)
10
insignificant(quiet, mean, lower, poor)
10
profound(hard, complex, deep, mysterious)
10
turbid(dark, gloomy, cloudy, muddy)
10
uncertain(clear, rough, difficult, dark)
9
amorphous(rough, unclear, chaotic, indistinct)
9
anonymous(strange, unknown, indefinite, unidentified)
9
baffling(hard, difficult, solid, strange)
9
blear(verb, dull, clear, hide)
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APASmart Define. (2016). obscure thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/obscure/thesaurus/synonyms
ChicagoSmart Define. 2016. "obscure thesaurus" https://smartdefine.org/obscure/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, obscure thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/obscure/thesaurus/synonyms>.
MLASmart Define. "obscure thesaurus" 29 March 2016. Web. 27 September 2026. <https://smartdefine.org/obscure/thesaurus/synonyms>